const mongoose = require("mongoose");
module.exports = new Promise((resolve, reject) => {
    mongoose.connect("mongodb://localhost:6080", {
        useNewUrlParser: true,
        useUnifiedTopology: true
    })

    mongoose.connection.once("open", (err) => {
        if (!err) {
            console.log('数据库连接成功')
            resolve()
        } else {
            console.log(err)
            reject(err)
        }
    })
})